Question

Can someone please help me? Thank you so much! ^^

The volume of a hemisphere is 56cm³. Calculate the radius of hesmiphere in cm.

A. 3
B. 4.5
C. 1.5
D. 6​

Answer 1

`\text{Volume of hemisphere} = \frac 23 \pi * r^3\\\\\implies 56 = \frac{2 \pi}3} * r^3\\\\\implies 56 * 3 = 2 \pi r^3\\\\\implies r^3 = (168)/(2 \pi) \\\\\implies r =\sqrt[3]{(168)/(2\pi)} = 2.99 \approx 3~ cm`